Automobile heater



Augw 9,1921a C. M. BOWERS AUTOMOBILE HEATER Filed June 12. 1924 2 Sheets-Sheet l C. M. BOWERS AUTOMOBILE HEATER Aug. 9, 1927.

Filed June 12. 1924 2 Sheets-Sheet 2 WWW/4 Alli/ri awwewtoz PatentedAug. 9, 1927.

UNITED STATES 1,638,317 PATENT OFFICE.

CHARLIE M. BOWEBS, OF BLOOMINGTON, INDIANA.

AUTOMOBILE HEATER.

Application filed June 12,

My invention relates to improvements in heaters for automobiles and it has reference more particularly to that class of heaters which utilize the waste heat from the exhaust pi e and the muttler, to heat the interior o the automobile. It is the object of the invention to provide a simple and inexpensive, easily'attachable, and highly etficient device of the character set forth in which a jacket around either the exhaust pipe or the muflfler, or both, is provided with an air inlet at its-rear end and a hood open ing forwardly so as to gather air and force it into the jacket, the latter being provided near its front end with an air outlet opening. Thus, the air must travel quite a distance within the jacket in contact with the exhaust pipe or muffler before it is discharged, and consequently such air will be highly heated and may be effectively used in connection with a register or the like disposed in the floor of the automobile, such air being also usable to warm the zone of the steering wheel to keep the drivers hands warm.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanyin drawings.

igure 1 is a side elevation partly broken away, showing the application of my invention to an automobile exhaust pipe and mother.

Figure 2 is a longitudinal sectional view partly in elevation.

Figure 3 is a vertical transverse section op line 3-3 of Fig. 2.

Figure 4 is an enlarged vertical sectional View through the mutfler and associated parts.

Figures 5, 6 and 7 are transverse sectional views on lines 55, 6- 6 and 77 of Fig. 4.

Figure Sis a fragmentary section partly in elevation similar ti Fig. 1, but showing a different form of construction.

In the drawings above briefly described, the numeral 1 designates the exhaust pipe from an internal combustion engine of an auto nobile, said pipe being dispored below the flooring 2 and discharging into a central tube 3 of a muffler. shown, this muffler comprises the tube 3, a larger tube 4 surrounding the same, a still larger tube 5 around the tube 4, and a air of end meinbers 6 to which the ends 0 all having flanges 17. within the jacket.

In the construction 1924. Serial R0. 719,823.

of the tubes are secured. The tube 3 is provided with gas outlet openings 7 at its rear end, the tube 4 is provided with similar openings 8 at its front end, the tube 5 is impert'orate, and the rear end member 6 is provided with a gas outlet 9 from the space between the tubes 4 and 5. The end members 6 project outwardly beyond the tube 5 and a cylindrical jacket 10 which surrounds said tube 5 is secured at its ends to said end members, said jacket having in its rear end an air inlet opening 11 which communicates with a channel-shaped hood 12 secured to the outer side of the jacket and having an open front end throughwhich atmospheric air may enter. At a point which is preferably diametrically opposite the hood 12, the jacket 10 is provided with an outlet 13 for hot air, and this outlet may discharge directly'into the rear portion of an automobile body, or into an appropriate hot air box or register, indicated in a general way at 14. This box or register may be of any desired construction.

A relatively small cylindrical jacket surrounds the exhaust pipe 1 between the muflier and the motor, said jacket being formed of two semi-cylindrical halves 15 in whose ends, semi-circular collar sections 16 are secured, said collar sections preferably These collar sections tightly embrace the exhaust pipe at the front and rear ends of the jacket 9 1515 and are clamped in lace by suitable clamping collars 18 whic surround the jacket at suitable points, said collars 18 also securing the two jacket sections together. The rear end of the jacket 1515 terminates slightly in front ofthe front member 6 of the combined muffler and heater, the exhaust pipe 1 isfsurrounded with asbestos or the'like 19 between the rear collar 16-16 and said end member 6, and this asbestos packing is secured in place by a suitable clamping collar 20, thus preventing the escape of heat and forming a tight joint at the rear end of the jacket. This jacket is provided at its rear end portion with an atmospheric air inlet 21 which communicates with a hood 22 similar to the hood 12 above described, so that atmospheric air is directed into the jacket to be heated by contact with the exhaust pipe 1.

From the front portion of the jacket 15-45, I have shown two hot air outlets 23 and 24, the former discharging into a suitable hot air box or register or directly through the floor of the car as occasion may demand. I have shown it however discharging into a register 25, which likethe member 14, may be of an desired construction. Suitably coupled to 5. 16 outlet 24, is a flexible pipe or hose 26 which may lead to a point adjacent the steering wheel, so that the hot air discharged therethrough will kee the drivers hands warm.

'l he device is simple and inexpensive, may be easily installed, and will be very desirable. It will be seen that as the automobile is being driven forwardly, the hoods 22 and 12 will direct air into the jackets around the exhaust pipe and the mufiler, that this air will be heated by contact with said pipe and mufller, and that it will be discharged to heat the interior of the car body. Attention is directed to the fact that air enters at the rear end of either 'acket and is discharged from the front end thereof, insuring long travel and contact of the air with the mufller or exhaust pipe, so that it will be highly heated.

Preferably, the outlets 13, 23 and 24 are provided with control valves 13", 23 and 24 respectively to regulate the passage of heat therethrough and to prevent such passage in hot weather. I

In Fi 8, a slightly different construction is s own, in which the 'acket for the exhaust pipe 1 is formed 0 several pipe sections 15 having interfittin ends held by clampin collars 18, the en most of these sections ieing closed by collars 16' such as the collars 16, above described. 'lhe rear section 15' is provided with an air inlet hood 22 and outlets 23 and 24" are provided from other sections for the same purpose as the outlets 23 and 24.

'As excellent results are obtained from the details disclosed, they are preferably followed, but within the scope of the invention as claimed, minor changes may be made.

I claim:

An automobile heating attachment adapted to surround an exhaust pipe said attachment comprisin an elongated cylindrical jacket formed 0 two abutting longitudinal acket sections having sectional closures at their ends to surround the exhaust pipe, clamping collars surrounding the jacket sections at intervals to secure them together around the exhaust pipe, and a forwardly openingv hood carried by the exterior of said jacket at its rear end, said hood being declined forwardly and havin an open front.

end and the jacket being Formed with an air inlet communicating with the rear end of said hood, the front end portion of said jacket being provided with a hot air outlet.

In testimony whereof I have hereunto af- 

